﻿/*
 * FCKeditor - The text editor for Internet - http://www.fckeditor.net
 * Copyright (C) 2003-2009 Frederico Caldeira Knabben
 *
 * == BEGIN LICENSE ==
 *
 * Licensed under the terms of any of the following licenses at your
 * choice:
 *
 *  - GNU General Public License Version 2 or later (the "GPL")
 *    http://www.gnu.org/licenses/gpl.html
 *
 *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
 *    http://www.gnu.org/licenses/lgpl.html
 *
 *  - Mozilla Public License Version 1.1 or later (the "MPL")
 *    http://www.mozilla.org/MPL/MPL-1.1.html
 *
 * == END LICENSE ==
 *
 * Component that creates floating panels. It is used by many
 * other components, like the toolbar items, context menu, etc...
 */

var FCKPanel = function( parentWindow )
{
    this.IsRTL            = ( FCKLang.Dir == 'rtl' ) ;
    this.IsContextMenu    = false ;
    this._LockCounter    = 0 ;

    this._Window = parentWindow || window ;

    var oDocument ;

    if ( FCKBrowserInfo.IsIE )
    {
        // Create the Popup that will hold the panel.
        // The popup has to be created before playing with domain hacks, see #1666.
        this._Popup    = this._Window.createPopup() ;

        // this._Window cannot be accessed while playing with domain hacks, but local variable is ok.
        // See #1666.
        var pDoc = this._Window.document ;

        // This is a trick to IE6 (not IE7). The original domain must be set
        // before creating the popup, so we are able to take a refence to the
        // document inside of it, and the set the proper domain for it. (#123)
        if ( FCK_IS_CUSTOM_DOMAIN && !FCKBrowserInfo.IsIE7 )
        {
            pDoc.domain = FCK_ORIGINAL_DOMAIN ;
            document.domain = FCK_ORIGINAL_DOMAIN ;
        }

        oDocument = this.Document = this._Popup.document ;

        // Set the proper domain inside the popup.
        if ( FCK_IS_CUSTOM_DOMAIN )
        {
            oDocument.domain = FCK_RUNTIME_DOMAIN ;
            pDoc.domain = FCK_RUNTIME_DOMAIN ;
            document.domain = FCK_RUNTIME_DOMAIN ;
        }

        FCK.IECleanup.AddItem( this, FCKPanel_Cleanup ) ;
    }
    else
    {
        var oIFrame = this._IFrame = this._Window.document.createElement('iframe') ;
        FCKTools.ResetStyles( oIFrame );
        oIFrame.src                    = 'javascript:void(0)' ;
        oIFrame.allowTransparency    = true ;
        oIFrame.frameBorder            = '0' ;
        oIFrame.scrolling            = 'no' ;
        oIFrame.style.width = oIFrame.style.height = '0px' ;
        FCKDomTools.SetElementStyles( oIFrame,
            {
                position    : 'absolute',
                zIndex        : FCKConfig.FloatingPanelsZIndex
            } ) ;

        this._Window.document.body.appendChild( oIFrame ) ;

        var oIFrameWindow = oIFrame.contentWindow ;

        oDocument = this.Document = oIFrameWindow.document ;

        // Workaround for Safari 12256. Ticket #63
        var sBase = '' ;
        if ( FCKBrowserInfo.IsSafari )
            sBase = '<base href="' + window.document.location + '">' ;

        // Initialize the IFRAME document body.
        oDocument.open() ;
        oDocument.write( '<html><head>' + sBase + '<\/head><body style="margin:0px;padding:0px;"><\/body><\/html>' ) ;
        oDocument.close() ;

        if( FCKBrowserInfo.IsAIR )
            FCKAdobeAIR.Panel_Contructor( oDocument, window.document.location ) ;

        FCKTools.AddEventListenerEx( oIFrameWindow, 'focus', FCKPanel_Window_OnFocus, this ) ;
        FCKTools.AddEventListenerEx( oIFrameWindow, 'blur', FCKPanel_Window_OnBlur, this ) ;
    }

    oDocument.dir = FCKLang.Dir ;

    FCKTools.AddEventListener( oDocument, 'contextmenu', FCKTools.CancelEvent ) ;


    // Create the main DIV that is used as the panel base.
    this.MainNode = oDocument.body.appendChild( oDocument.createElement('DIV') ) ;

    // The "float" property must be set so Firefox calculates the size correctly.
    this.MainNode.style.cssFloat = this.IsRTL ? 'right' : 'left' ;
}


FCKPanel.prototype.AppendStyleSheet = function( styleSheet )
{
    FCKTools.AppendStyleSheet( this.Document, styleSheet ) ;
}

FCKPanel.prototype.Preload = function( x, y, relElement )
{
    // The offsetWidth and offsetHeight properties are not available if the
    // element is not visible. So we must "show" the popup with no size to
    // be able to use that values in the second call (IE only).
    if ( this._Popup )
        this._Popup.show( x, y, 0, 0, relElement ) ;
}

// Workaround for IE7 problem. See #1982
// Submenus are restricted to the size of its parent, so we increase it as needed.
// Returns true if the panel has been repositioned
FCKPanel.prototype.ResizeForSubpanel = function( panel, width, height )
{
    if ( !FCKBrowserInfo.IsIE7 )
        return false ;

    if ( !this._Popup.isOpen )
    {
        this.Subpanel = null ;
        return false ;
    }

    // If we are resetting the extra space
    if ( width == 0 && height == 0 )
    {
        // Another subpanel is being shown, so we must not shrink back
        if (this.Subpanel !== panel)
            return false ;

        // Reset values.
        // We leave the IncreasedY untouched to avoid vertical movement of the
        // menu if the submenu is higher than the main menu.
        this.Subpanel = null ;
        this.IncreasedX = 0 ;
    }
    else
    {
        this.Subpanel = panel ;
        // If the panel has already been increased enough, get out
        if ( ( this.IncreasedX >= width ) && ( this.IncreasedY >= height ) )
            return false ;

        this.IncreasedX = Math.max( this.IncreasedX, width ) ;
        this.IncreasedY = Math.max( this.IncreasedY, height ) ;
    }

    var x = this.ShowRect.x ;
    var w = this.IncreasedX ;
    if ( this.IsRTL )
        x  = x - w ;

    // Horizontally increase as needed (sum of widths).
    // Vertically, use only the maximum of this menu or the submenu
    var finalWidth = this.ShowRect.w + w ;
    var finalHeight = Math.max( this.ShowRect.h, this.IncreasedY ) ;
    if ( this.ParentPanel )
        this.ParentPanel.ResizeForSubpanel( this, finalWidth, finalHeight ) ;
    this._Popup.show( x, this.ShowRect.y, finalWidth, finalHeight, this.RelativeElement ) ;

    return this.IsRTL ;
}

FCKPanel.prototype.Show = function( x, y, relElement, width, height )
{
    var iMainWidth ;
    var eMainNode = this.MainNode ;

    if ( this._Popup )
    {
        // The offsetWidth and offsetHeight properties are not available if the
        // element is not visible. So we must "show" the popup with no size to
        // be able to use that values in the second call.
        this._Popup.show( x, y, 0, 0, relElement ) ;

        // The following lines must be place after the above "show", otherwise it
        // doesn't has the desired effect.
        FCKDomTools.SetElementStyles( eMainNode,
            {
                width    : width ? width + 'px' : '',
                height    : height ? height + 'px' : ''
            } ) ;

        iMainWidth = eMainNode.offsetWidth ;

        if ( FCKBrowserInfo.IsIE7 )
        {
            if (this.ParentPanel && this.ParentPanel.ResizeForSubpanel(this, iMainWidth, eMainNode.offsetHeight) )
            {
                // As the parent has moved, allow the browser to update its internal data, so the new position is correct.
                FCKTools.RunFunction( this.Show, this, [x, y, relElement] ) ;
                return ;
            }
        }

        if ( this.IsRTL )
        {
            if ( this.IsContextMenu )
                x  = x - iMainWidth + 1 ;
            else if ( relElement )
                x  = ( x * -1 ) + relElement.offsetWidth - iMainWidth ;
        }

        if ( FCKBrowserInfo.IsIE7 )
        {
            // Store the values that will be used by the ResizeForSubpanel function
            this.ShowRect = {x:x, y:y, w:iMainWidth, h:eMainNode.offsetHeight} ;
            this.IncreasedX = 0 ;
            this.IncreasedY = 0 ;
            this.RelativeElement = relElement ;
        }

        // Second call: Show the Popup at the specified location, with the correct size.
        this._Popup.show( x, y, iMainWidth, eMainNode.offsetHeight, relElement ) ;

        if ( this.OnHide )
        {
            if ( this._Timer )
                CheckPopupOnHide.call( this, true ) ;

            this._Timer = FCKTools.SetInterval( CheckPopupOnHide, 100, this ) ;
        }
    }
    else
    {
        // Do not fire OnBlur while the panel is opened.
        if ( typeof( FCK.ToolbarSet.CurrentInstance.FocusManager ) != 'undefined' )
            FCK.ToolbarSet.CurrentInstance.FocusManager.Lock() ;

        if ( this.ParentPanel )
        {
            this.ParentPanel.Lock() ;

            // Due to a bug on FF3, we must ensure that the parent panel will
            // blur (#1584).
            FCKPanel_Window_OnBlur( null, this.ParentPanel ) ;
        }

        // Toggle the iframe scrolling attribute to prevent the panel
        // scrollbars from disappearing in FF Mac. (#191)
        if ( FCKBrowserInfo.IsGecko && FCKBrowserInfo.IsMac )
        {
            this._IFrame.scrolling = '' ;
            FCKTools.RunFunction( function(){ this._IFrame.scrolling = 'no'; }, this ) ;
        }

        // Be sure we'll not have more than one Panel opened at the same time.
        // Do not unlock focus manager here because we're displaying another floating panel
        // instead of returning the editor to a "no panel" state (Bug #1514).
        if ( FCK.ToolbarSet.CurrentInstance.GetInstanceObject( 'FCKPanel' )._OpenedPanel &&
                FCK.ToolbarSet.CurrentInstance.GetInstanceObject( 'FCKPanel' )._OpenedPanel != this )
            FCK.ToolbarSet.CurrentInstance.GetInstanceObject( 'FCKPanel' )._OpenedPanel.Hide( false, true ) ;

        FCKDomTools.SetElementStyles( eMainNode,
            {
                width    : width ? width + 'px' : '',
                height    : height ? height + 'px' : ''
            } ) ;

        iMainWidth = eMainNode.offsetWidth ;

        if ( !width )    this._IFrame.width    = 1 ;
        if ( !height )    this._IFrame.height    = 1 ;

        // This is weird... but with Firefox, we must get the offsetWidth before
        // setting the _IFrame size (which returns "0"), and then after that,
        // to return the correct width. Remove the first step and it will not
        // work when the editor is in RTL.
        //
        // The "|| eMainNode.firstChild.offsetWidth" part has been added
        // for Opera compatibility (see #570).
        iMainWidth = eMainNode.offsetWidth || eMainNode.firstChild.offsetWidth ;

        // Base the popup coordinates upon the coordinates of relElement.
        var oPos = FCKTools.GetDocumentPosition( this._Window,
            relElement.nodeType == 9 ?
                ( FCKTools.IsStrictMode( relElement ) ? relElement.documentElement : relElement.body ) :
                relElement ) ;

        // Minus the offsets provided by any positioned parent element of the panel iframe.
        var positionedAncestor = FCKDomTools.GetPositionedAncestor( this._IFrame.parentNode ) ;
        if ( positionedAncestor )
        {
            var nPos = FCKTools.GetDocumentPosition( FCKTools.GetElementWindow( positionedAncestor ), positionedAncestor ) ;
            oPos.x -= nPos.x ;
            oPos.y -= nPos.y ;
        }

        if ( this.IsRTL && !this.IsContextMenu )
            x = ( x * -1 ) ;

        x += oPos.x ;
        y += oPos.y ;

        if ( this.IsRTL )
        {
            if ( this.IsContextMenu )
                x  = x - iMainWidth + 1 ;
            else if ( relElement )
                x  = x + relElement.offsetWidth - iMainWidth ;
        }
        else
        {
            var oViewPaneSize = FCKTools.GetViewPaneSize( this._Window ) ;
            var oScrollPosition = FCKTools.GetScrollPosition( this._Window ) ;

            var iViewPaneHeight    = oViewPaneSize.Height + oScrollPosition.Y ;
            var iViewPaneWidth    = oViewPaneSize.Width + oScrollPosition.X ;

            if ( ( x + iMainWidth ) > iViewPaneWidth )
                x -= x + iMainWidth - iViewPaneWidth ;

            if ( ( y + eMainNode.offsetHeight ) > iViewPaneHeight )
                y -= y + eMainNode.offsetHeight - iViewPaneHeight ;
        }

        // Set the context menu DIV in the specified location.
        FCKDomTools.SetElementStyles( this._IFrame,
            {
                left    : x + 'px',
                top        : y + 'px'
            } ) ;

        // Move the focus to the IFRAME so we catch the "onblur".
        this._IFrame.contentWindow.focus() ;
        this._IsOpened = true ;

        var me = this ;
        this._resizeTimer = setTimeout( function()
            {
                var iWidth = eMainNode.offsetWidth || eMainNode.firstChild.offsetWidth ;
                var iHeight = eMainNode.offsetHeight ;
                me._IFrame.style.width = iWidth + 'px' ;
                me._IFrame.style.height = iHeight + 'px' ;

            }, 0 ) ;

        FCK.ToolbarSet.CurrentInstance.GetInstanceObject( 'FCKPanel' )._OpenedPanel = this ;
    }

    FCKTools.RunFunction( this.OnShow, this ) ;
}

FCKPanel.prototype.Hide = function( ignoreOnHide, ignoreFocusManagerUnlock )
{
    if ( this._Popup )
        this._Popup.hide() ;
    else
    {
        if ( !this._IsOpened || this._LockCounter > 0 )
            return ;

        // Enable the editor to fire the "OnBlur".
        if ( typeof( FCKFocusManager ) != 'undefined' && !ignoreFocusManagerUnlock )
            FCKFocusManager.Unlock() ;

        // It is better to set the sizes to 0, otherwise Firefox would have
        // rendering problems.
        this._IFrame.style.width = this._IFrame.style.height = '0px' ;

        this._IsOpened = false ;

        if ( this._resizeTimer )
        {
            clearTimeout( this._resizeTimer ) ;
            this._resizeTimer = null ;
        }

        if ( this.ParentPanel )
            this.ParentPanel.Unlock() ;

        if ( !ignoreOnHide )
            FCKTools.RunFunction( this.OnHide, this ) ;
    }
}

FCKPanel.prototype.CheckIsOpened = function()
{
    if ( this._Popup )
        return this._Popup.isOpen ;
    else
        return this._IsOpened ;
}

FCKPanel.prototype.CreateChildPanel = function()
{
    var oWindow = this._Popup ? FCKTools.GetDocumentWindow( this.Document ) : this._Window ;

    var oChildPanel = new FCKPanel( oWindow ) ;
    oChildPanel.ParentPanel = this ;

    return oChildPanel ;
}

FCKPanel.prototype.Lock = function()
{
    this._LockCounter++ ;
}

FCKPanel.prototype.Unlock = function()
{
    if ( --this._LockCounter == 0 && !this.HasFocus )
        this.Hide() ;
}

/* Events */

function FCKPanel_Window_OnFocus( e, panel )
{
    panel.HasFocus = true ;
}

function FCKPanel_Window_OnBlur( e, panel )
{
    panel.HasFocus = false ;

    if ( panel._LockCounter == 0 )
        FCKTools.RunFunction( panel.Hide, panel ) ;
}

function CheckPopupOnHide( forceHide )
{
    if ( forceHide || !this._Popup.isOpen )
    {
        window.clearInterval( this._Timer ) ;
        this._Timer = null ;

        if (this._Popup && this.ParentPanel && !forceHide)
            this.ParentPanel.ResizeForSubpanel(this, 0, 0) ;

        FCKTools.RunFunction( this.OnHide, this ) ;
    }
}

function FCKPanel_Cleanup()
{
    this._Popup = null ;
    this._Window = null ;
    this.Document = null ;
    this.MainNode = null ;
    this.RelativeElement = null ;
}
